Air conditioner



FIG. 1 is a front perspective view of an air conditioner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines in the figures depict portions of the air conditioner which form no part of the claimed design. 

CLAIM We claim the ornamental design for an air conditioner, as shown and described. 